Composite polymer-containing protective coatings on magnesium alloy MA8
By Gnedenkov, S.V.; Sinebryukhov, S.L.; Mashtalyar, D.V.; Egorkin, V.S.; Sidorova, M.V. & Gnedenkov, A.S.
Published in Corrosion Science
2014
Abstract
The earlier developed approaches to the formation of composite polymer-containing coatings by plasma electrolytic oxidation (PEO) using various low-molecular fractions of superdispersed polytetrafluoroethylene (SPTFE) have been summarized. A unique method for the formation of a composite polymer-containing coating at the surface of magnesium alloy MA8 has been suggested. The improvement in the corrosion and tribological behavior of the polymer-containing coating can be attributed to the morphology and insulating properties of surface layers and solid lubrication effect of SPTFE particles. Such multifunctional coatings have high corrosion resistance (Rp = 3.0 X 107 Ω cm2) and low friction coefficient (0.04) under dry wear conditions.